Ultrasonic needle biopsy needle

Abstract

The ultrasonic needle biopsy needle comprises a needle body and a needle head, the needle body is of a hollow cylinder structure, an opening groove is formed in the front end of the needle body, a positioning spine and a main blade are arranged at the end of the needle head, the main blade is provided with a first side blade inclining towards the periphery, and the first side blade is provided with a second side blade inclining towards the periphery. The distance between the positioning spine and the needle body is larger than that between the main blade and the needle body, the two circumferential ends of the main blade are each provided with an open groove, the two circumferential ends of the positioning spine and the two circumferential ends of the main blade are connected with the open grooves through slope blades, and therefore a large opening is formed between the two slope blades connected with the open grooves. According to the ultrasonic needle biopsy needle, the main blade is arranged at the end of the needle head, after the positioning spine is used for positioning tissue, the main blade and the slope blades on the two sides of the main blade can completely cut off the tissue, the cutting area occupies more than half of the area of the needle head, and one-time successful cutting can be achieved; and the cut tissue can enter the opening grooves in the two sides, the fixing effect is better, and the tissue is effectively prevented from falling off.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an ultrasonic puncture biopsy needle. Background Technology

[0002] Ultrasonic biopsy needles are biopsy sampling instruments that enter the body's natural cavities through the forceps channel of an endoscope. Current biopsy needles only have a needle tip at the end, and tissue cutting can only be completed through the blade on the side of the needle tip. This results in a small cutting range, making it unsuitable for cutting large areas of tissue or requiring multiple cuts, and the cut tissue is prone to detachment. Utility Model Content

[0003] To address the technical problems of small cutting range, low efficiency, and easy tissue detachment in existing biopsy needles, this invention provides an ultrasonic biopsy needle to solve these problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an ultrasonic puncture biopsy needle, including a needle body and a needle tip. The needle body adopts a hollow cylindrical structure, and the front end of the needle body is provided with an opening groove. The end of the needle tip has a positioning spike and a main blade. The main blade has a first side blade that is inclined outward. The distance between the positioning spike and the needle body is greater than the distance between the main blade and the needle body. An opening groove is provided at each of the two circumferential ends of the main blade. The circumferential ends of the positioning spike and the main blade are respectively connected to the opening grooves through inclined blades, thereby forming a large opening between the two inclined blades connecting the opening grooves.

[0005] In an optional embodiment of this utility model, the positioning spikes and the main blade are arranged opposite to each other, and two opening slots are arranged in an array along the circumferential direction.

[0006] In an optional embodiment of this utility model, a fixing groove is provided at the root of the opening groove, and the maximum width of the fixing groove is greater than the width of the opening groove.

[0007] In an optional embodiment of this utility model, the fixing groove is racetrack shaped.

[0008] In an optional embodiment of this utility model, the outer peripheral surface of the needle body is a non-smooth surface.

[0009] In an optional embodiment of this utility model, the outer peripheral surface of the needle body is provided with a plurality of pits.

[0010] In an optional embodiment of this utility model, the outer peripheral surface of the needle body is provided with a plurality of protruding structures or annular grooves.

[0011] In an optional embodiment of this utility model, the recess is arc-shaped, rectangular, or hemispherical.

[0012] In an optional embodiment of this invention, the ramp blade has a second side blade that is inclined outwards.

[0013] In an optional embodiment of this utility model, the main blade is arc-shaped, and both ends of the main blade protrude outward along the axial direction.

[0014] The beneficial effects of this utility model are:

[0015] (1) The ultrasonic puncture biopsy needle of this utility model has a main blade at the end of the needle tip. After the tissue is located by the positioning spiking ...

[0016] (2) The ultrasonic puncture biopsy needle of this utility model has the positioning thorn and the main blade arranged opposite each other, which has better structural symmetry and can effectively avoid structural deformation caused by different forces during processing.

[0017] (3) The ultrasonic puncture biopsy needle of this utility model reduces the number of positioning punctures to leave a larger space at the tip of the needle to form a large opening, so that the damaged tissue can smoothly enter the opening groove along the large opening and avoid obstruction of the cutting operation. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of a specific embodiment of the ultrasonic biopsy needle described in this utility model;

[0020] Figure 2 This is a front view of a specific embodiment of the ultrasonic biopsy needle described in this utility model;

[0021] Figure 3 yes Figure 2 A sectional view along line AA.

[0022] In the figure, 1 is the needle body, 101 is the opening groove, 102 is the fixing groove, 103 is the pit, 2 is the needle tip, 201 is the positioning spike, 202 is the main blade, 203 is the first side blade, 204 is the sloping blade, 205 is the large opening, and 206 is the second side blade. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] Example 1

[0025] like Figures 1-3 As shown, an ultrasonic biopsy needle includes a needle body 1 and a needle tip 2. The needle body 1 has a hollow cylindrical structure, and an opening groove 101 is provided at the front end of the needle body 1. The end of the needle tip 2 has a positioning spike 201 and a main blade 202. The main blade 202 has a first side blade 203 that is inclined outward. The first side blade 203 thins the end of the main blade 202, which is beneficial for cutting. The distance between the positioning spike 201 and the needle body 1 is greater than the distance between the main blade 202 and the needle body 1. That is, the positioning spike 201 first contacts the damaged tissue and performs puncture and positioning on the damaged tissue, and then the main blade 202 contacts the damaged tissue and performs cutting.

[0026] An opening groove 101 is provided at each of the two circumferential ends of the main blade 202. The positioning spike 201 and the two circumferential ends of the main blade 202 are connected to the opening groove 101 through the inclined blade 204, thereby forming a large opening 205 between the two inclined blades 204 that connect the opening groove 101. After the damaged tissue is cut through the opening by the main blade 202, it continues to move towards the inclined blades 204 on both sides of the main blade 202 and is further cut by the inclined blades 204 to increase the cutting surface. The cut damaged tissue is stuck into the opening groove 101 on both sides along the large opening 205.

[0027] This invention cuts damaged tissue using the main blade 202 and the inclined blades 204 on both sides. The cutting length occupies approximately half of the circumference. Compared with the prior art that relies on only one side of the front blade for cutting, this invention has a larger cutting surface area, which is conducive to successful cutting in one go. The opening at the end of the needle 2 is also larger, which can accommodate larger damaged tissue. Furthermore, the removed damaged tissue can be confined by the opening grooves 101 on both sides, resulting in better confining stability and preventing tissue detachment.

[0028] In a further design, the beveled blade 204 has a second side blade 206 that is inclined outward, which can reduce the thickness of the beveled blade 204, increase the cutting effect of the beveled blade 204, and make the cutting operation more labor-saving.

[0029] To ensure structural symmetry, in an optional embodiment of this utility model, the positioning spikes 201 and the main blade 202 are arranged opposite to each other, and two opening slots 101 are arranged in an array along the circumferential direction.

[0030] The main blade 202 is the end face of the needle 2. Its surface shape can be flat or serrated. In this embodiment, the surface of the main blade 202 is arc-shaped, and the two ends of the main blade 202 protrude outward along the axial direction. That is, the main blade 202 is an arc-shaped surface that is concave in the middle and convex at both ends. This arc-shaped surface has good smoothness, which helps to cut smoothly, and the protrusions at both ends can play a role in further positioning.

[0031] Example 2

[0032] Based on Embodiment 1, a fixing groove 102 is provided at the root of the opening groove 101, and the maximum width of the fixing groove 102 is greater than the width of the opening groove 101. Damaged tissue passes through the opening groove 101 and enters the fixing groove 102. Since the width of the opening groove 101 is small, the damaged tissue can be confined within the fixing groove 102. The fixing groove 102 can be a rectangular groove or other irregular shape. In this embodiment, the fixing groove 102 is racetrack-shaped.

[0033] Example 3

[0034] Based on the above embodiments, the outer peripheral surface of the needle body 1 is a non-smooth surface. That is, the outer surface of the needle body 1 has an uneven structure. This structure can be used for ultrasound positioning. As the name suggests, an ultrasound biopsy needle requires the use of an ultrasound device to position the needle tip 2. Unlike other minimally invasive endoscopic medical devices, the ultrasound biopsy needle needs to consider the force and direction of the insertion. Therefore, it is necessary to constantly monitor the position of the needle tip 2 within the endoscopic forceps channel. Thus, these uneven structures are used in conjunction with the ultrasound device for positioning. The ultrasound waves emitted by the device are reflected back after encountering these positioning areas, and the position of the needle tip 2 can be located based on the wavelength.

[0035] The non-smooth surface can be achieved by arranging a number of pits 103 on the outer peripheral surface of the needle body 1. The pits 103 refer to a number of independently arranged small grooves. The pits 103 can be spherical, rectangular, arc-shaped or conical, etc. The non-smooth surface can also be achieved by arranging a number of protruding structures or annular grooves on the outer peripheral surface of the needle body 1.

[0036] like Figure 1 and Figure 2 The needle body 1 shown has several hemispherical pits 103 arranged on its outer peripheral surface. To ensure an aesthetically pleasing appearance, the pits 103 are preferably arranged in an orderly array on the outer peripheral surface of the needle body 1.

[0037] In the description of this utility model, it should be understood that the terms "inner", "outer", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a number" means two or more.

[0039] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0040] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An ultrasonic biopsy needle, characterized in that: The device includes a needle body (1) and a needle tip (2). The needle body (1) adopts a hollow cylindrical structure. The front end of the needle body (1) is provided with an opening groove (101). The end of the needle tip (2) has a positioning spike (201) and a main blade (202). The main blade (202) has a first side blade (203) that is inclined outward. The distance between the positioning spike (201) and the needle body (1) is greater than the distance between the main blade (202) and the needle body (1). An opening groove (101) is provided at each of the two circumferential ends of the main blade (202). The two circumferential ends of the positioning spike (201) and the main blade (202) are connected to the opening groove (101) through a ramp blade (204), thereby forming a large opening (205) between the two ramp blades (204) that connect the opening groove (101).

2. The ultrasonic biopsy needle according to claim 1, characterized in that: The positioning spikes (201) and the main blade (202) are arranged opposite to each other, and two opening slots (101) are arranged in an array along the circumferential direction.

3. The ultrasonic biopsy needle according to claim 1, characterized in that: The root of the opening groove (101) is provided with a fixing groove (102), and the maximum width of the fixing groove (102) is greater than the width of the opening groove (101).

4. The ultrasonic biopsy needle according to claim 3, characterized in that: The fixing groove (102) is racetrack shaped.

5. The ultrasonic biopsy needle according to claim 1, characterized in that: The outer peripheral surface of the needle body (1) is a non-smooth surface.

6. The ultrasonic biopsy needle according to claim 5, characterized in that: The outer circumferential surface of the needle body (1) is provided with several pits (103).

7. The ultrasonic biopsy needle according to claim 5, characterized in that: The outer circumferential surface of the needle body (1) is provided with several protruding structures or annular grooves.

8. The ultrasonic biopsy needle according to claim 6, characterized in that: The recess (103) is arc-shaped, rectangular, or hemispherical.

9. The ultrasonic biopsy needle according to claim 1, characterized in that: The sloped blade (204) has a second side blade (206) that is inclined outward.

10. The ultrasonic biopsy needle according to claim 1, characterized in that: The main cutting edge (202) is arc-shaped, and both ends of the main cutting edge (202) protrude outward along the axial direction.

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